43216801 has 4 divisors (see below), whose sum is σ = 43317504. Its totient is φ = 43116100.

The previous prime is 43216799. The next prime is 43216807. The reversal of 43216801 is 10861234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43216801 - 2¹ = 43216799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43216807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49705 + ... + 50566.

It is an arithmetic number, because the mean of its divisors is an integer number (10829376).

Almost surely, 2^43216801 is an apocalyptic number.

It is an amenable number.

43216801 is a deficient number, since it is larger than the sum of its proper divisors (100703).

43216801 is a wasteful number, since it uses less digits than its factorization.

43216801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100702.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 43216801 is about 6573.9486611929. The cubic root of 43216801 is about 350.9276101177.

The spelling of 43216801 in words is "forty-three million, two hundred sixteen thousand, eight hundred one".